"ID" "Type" "Author" "Title" "Publication" "Publisher" "Year" "Date" "Location" "Pages" "Volume" "Issue" "SerialNr" "URL" "DOI" "perry_jr1984" "JOUR" "Perry Jr, Charles R.; Lautenschlager, Lyle F." "Functional equivalence of spectral vegetation indices" "Remote Sensing of Environment" "" "1984" "" "" "169-182" "14" "1–3" "0034-4257" "http://www.sciencedirect.com/science/article/pii/0034425784900130" "10.1016/0034-4257(84)90013-0" "idb" "ELEC" "Henrich, V.; Krauss, G.; Götze, C.; Sandow, C." "The IndexDatabase" "" "" "2011" "2011" "Bonn" "" "" "" "" "https://www.indexdatabase.de/" ""